Industrial Stretch Film Jumbo Roll 50kg for Warehouse Packaging Heavy Duty LLDPE Pallet Wrap for Storage Protection Product Description The performance of machine wound film is mainly measured by the following indicators: tensile strength, puncture resistance, and viscosity. Stretching rate refers to the degree to which a film can be stretched before fracture. A higher stretching rate means more economical usage, as the same length of film can cover a larger area. The